Battery pack busbar module

Abstract

Abnormal noise at a battery pack busbar module is prevented. A battery pack busbar module includes busbar accommodating portions each accommodate busbars which connect in series batteries, cover portions coupled by hinges to one of side edges of openings in the busbar accommodating portions to cover the openings, and lock portions to lock the cover portions by bringing first engagement portions provided on the other side edges of the busbar accommodating portions and second engagement portions provided on the cover portions into engagement with each other, and ribs projecting from the cover portions to come into abutment with the busbar accommodating portions are formed in positions spaced away from the lock portions, a height of the ribs being set such that the second engagement portions are not brought into engagement with the first engagement portions when the ribs abut the busbar accommodating portions.

What is claimed is: 
     
       1. A battery pack busbar module comprising:
 a resin busbar accommodating portion having an opening containing therein a plurality of busbars connected in series with a plurality of batteries arranged so that electrodes of each of the batteries having different polarities are disposed adjacent to each other; 
 a resin cover portion coupled to one of a plurality of side edges of the opening in the busbar accommodating portion via a plurality of hinges, the side edges extending in an array direction of the batteries so as to cover the opening in the busbar accommodating portion in an opening and a closing fashion and; 
 a lock portion having a first engagement portion provided on another side edge of the opening in the busbar accommodating portion extending in the array direction of the batteries; 
 a second engagement portion provided on the cover portion so as to correspond to the first engagement portion and configured to lock the cover portion in a position where the cover portion covers the opening in the busbar accommodating portion by bringing the first engagement portion and the second engagement portion into engagement with each other, and; 
 a rib projecting from the cover portion towards the busbar accommodating portion and configured to be brought into abutment with the busbar accommodating portion, wherein the rib is disposed in a position away from the lock portion in the array direction of the batteries, and having a projecting height set to a height such that the second engagement portion on the cover portion is not brought into engagement with the first engagement portion on the busbar accommodating portion and positioned such that the rib abuts the busbar accommodating portion. 
 
     
     
       2. The battery pack busbar module according to  claim 1 , wherein
 the cover portion is formed into a box shape having a recess in a side thereof facing the busbar accommodating portion, and the lock portion and the rib are formed on a side wall of the box shape. 
 
     
     
       3. The battery pack busbar module according to  claim 1 , wherein
 the height of the rib is set based on at least either of a dimension over which the lock portion and the rib are spaced away from each other and an elasticity of the cover portion. 
 
     
     
       4. The battery pack busbar module according to  claim 2 , wherein
 the height of the rib is set based on at least either of a dimension over which the lock portion and the rib are spaced away from each other and an elasticity of the cover portion.